senior advisors from the romney and obama campaigns will be with us. we'll ask them about a controversial video of president obama that just resurfaced. how the vice presidential candidates are clashing on the campaign trail and what can we expect tonight. we were there last month as scientists caught and tagged a great white shark. remember that? we've been tracking it and today you may be surprised to see what we've learned. we'll share that with you today starting at 7:00. back to you. >> thank you, gayle. >>> this week marks the tenth anniversary of the sniper shootings which terrorized our region. ten people died, three more were hurt and the deadliest day was this date ten years ago. that's when four people were gunned down on what started out as a normal morning in our region. kristin fisher is live at one of those shootings, the leisure world shopping plaza in silver spring. >> reporter: good morning. ten years ago today today was the day law enforcement really realized they were dealing with a person or persons who were targeting innocent rand